Mechanism



Patented May 13, 1930 UNITED STATES PATENT OFFICE OSCAR J.. SUNDSTRAND,OF BJOCKFORD, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO SUNDSTRANDCOBIORATION, @F WILMINGTON', DELAWARE, A. CORPORATION OF DELAWARETRANSFER MECEA'NISM Drignal application led December 3i, i920, SerialNo. 434,242. Divided and this application med November 27,

This application is a division oi my application Serial No. 434,242,filed December 31, 1920, (which has since matured into Patent No.1,626,889) upon an adding and listing machine adapted to add and printitems of English currency as well as decimal items. That ortion of themachine which is herein claimed is the transfer mechanism, saidmechanism being of such character that it ma be adjusted to deal withboth decimals an English currency.

In the accompanying drawings, Figure 1 is a fragmental view of theadding and printing mechanism of a machine embodying the features of minvention, the machine being shown as set or decimal currenc Fig. 2illustrates a specimen o work done upon the machine.

Fig. 3 shows the transfer mechanism associated with the tens-shillingstype bar, the parts being set for English currency.

Fig. 4 is a plan view of the series of adding pinions and a portion ofthe transfer mechanism.

Fi 5 is a detail view of the adding pinion associated with the pencetype bar.

Fig. 6 is a rear view of a part of the mechanism shown in Fig. 3.

Fig. 7 is a plan view of a part of the transfer mechanism.

For convenience in affording an understanding of the invention, I shalldescribe the same as embodied in a ten-key adding and listing machinesuch as is disclosed in Patent No. 1,198,487, granted September 19,1916, to Rockford Milling Machine Co. upon an ap lication filed byGustaf David Sundstrand), but I would have it understood that thepresent invention is not limited to machines of the characterillustrated in said patent. The machine herein shown comprises a platen2 and a plurality of type bars. In the present instance there aretentype bars, but the number may be greater or less. The type bar A(Fig. 4) at the extreme right is for printing a signal and has nomovement. The second type bar from the right is marked AX and carriestwelve type, the uppermost type being ada ted to print a character(herein the letter (21)2) to indicate that the machine is set to add andprint decimals. The remaining type on the type har Ax are ada ted toprint from 1 to 11, respectivelyu he type har AX is normally in positionto print the character D. The remaining type bars are designated A1, A2,A3, A, A, A", A7 and A8, and each is provided with ten type adapted toprint from naught to nine, respectively. The type bars A1 to A8,inclusive, are normally in position to print ciphers.

The means for vertically moving the type bars Ax to A8, inclusive, fromthe normal or initial position to any other selected position and backagain may be of any preferred character, that herein shown beinggenerally similar to the mechanism disclosed in the before-mentionedPatent No. 1,198,487 and identical with the mechanism shown in my PatentN o. 1,583,102, dated May 4, 1926. The type-bar'moving means thereforeneed not be described herein.

While various forms of adding mechanism may be employed, that hereinshown comprises a series of adding pinions (Fig. 4) rotatably mountedupon a shaft 126. The pinions (of which there is one :for each of thetype bars Ax to A, inclusive) are adapted to mesh with rack 129 formedin said type bars. The pinion 125x that meshes with the rack of thepence type bar Ax has twelve teeth. The pinions 125 that mesh with theracks of the type bars A1 to A", inclusive, each have twenty teeth.

When an item is to be added, the pinions are disengaged from the racksbefore the type bars are raised, as explained in Patent No. 1,198,487,and the pinions are moved into mesh with 'the racks just before the typebars are moved downwardly. Addition therefore occurs in the downwardstroke of the type bars, the extent of the rotation of the pinionsdepending of course, upon the extent of movement of said bars.

While various means for transferring or carrying from one numericalorder to the next higher order may be used, that herein shown isgenerally similar to the carrying mechanism shown in said Patent No.1,198,487. The carrying mechanism associated with the type bars A3 to A,inclusive,

50 dog until the tooth 161 is below the 60 the pence type issubstantially identical with that illustrated and described in saidpatent.

The extent ofthe downward movement of the ytype bars A1 to A",inclusive, is limited 5 (except in the carrying operation) by contact ofthe shoulder 157 (Fig. 1) on said type bars with stop lugs 158. When anamount is to-be carried from one order to the next higher order, thestop lug 158 for the type bar belonging to such higher order iswithdrawn, thereby allowing that type bar to descend to the limit of itsdownward movement. The extent of such descent is just sufficient to turnthe adding pinion `for that'type bar through the distance of one tooth.Each stop lug is formed on a slide 159 which is guided for horizontalreciprocation. To each slide 159 is pivoted a dog 160. All of thetransfer dogs are identically zo similar, but in order to distinguishthe dog that transfers tens of shillings to units of pounds said dog isdesignated 160trl in Figs. 1 and 3. Each transfer dog has a-tooth 161adapted to lie in front of a-stationary locking plate 162. A spring 163tends to hold the tooth 1,61 in engagement with the plate 162 and alsotends to pull the dog 160 and the slide 159 rearwardly. When the tooth161 is in engagement with the front edge 3o of the plate 162, the stoplug 159 is in position to limit the downward movement of thecorresponding type bar. When the tooth 161 is disengaged from the plate,the spring 163 pulls the dog and the slide back so that the stop lug 158is out of the path of movement of the type bar lug 157.

In the case of the type bars A1 and A3 to A, inclusive, the means fordisengaging the tooth 161 from the plate 162 consists of twodiametrically opposite lugs fixed to the pinion of the next lower order,as disclosed in said Patent No. 1,198,487. (In this embodiment of theinvention, two lugs are provided, because each pinion has'twenty teeth.)

When the amount accumulated on a pinion path of the rack of the nexthigher order,

and the latter therefore moves down far enough to turn its intermeshingpinion through the distance of one tooth. t The carrying mechanismassociated with arAc also is identical in substance with that disclosedin said Patent No. 1,198,487, the pinion 125* (Figs. 4 and 5) havingtwelve teeth and having attached to one side a lug 164 adapted when thepinion .o5 makes a complete revolution to depress the adjacent dog 160and thus release the unitsshillings type bar A1 to downward movekmentequal to the distance of one tooth, as

the tens-shillings type bar Az is like that described in said PatentNo.^1,198,487.

Since there are twenty shillings in a pound sterling, the carryingmechanism for trans* mitting movement from the tens-shillings type barA2 to the units-pounds typeI bar As operates whenever two tens have beenaccumulated on the pinion 125* (Fig. 1) for the tens-shillings type barA. Said pinion (which has twenty teeth). has attached to one of itssides ten tripping lugs (see Fig. 3). Two diametrically opposite lugsare somewhat longer than the others and are designated 164, the shorterones being marked 164b on the drawing. All of the lugs 1641 and 164b arearranged to trip the transfer dog 1603. When decimals are beingaccumulated said' dog 160El occupies a position out of reach of the lugs164b and within reach of the'y lugs 1641, and hence is operated once forevery .ten teeth of the pinion 1251. When English money is beingregistered the dog 1601l occupies a position farther forward so as to beoperated by each of the lugs, and consequently is operated once forevery two teeth of the tens-shillings pinion 1251. The means fordetermining-the position of the dog 160a comprises a rock shaft 416(Figs. 4 and 6) to one end of which is fixed an arm 417. Said arm isarranged to be swung forward by means including a setting lever (notherein shown). The shaft 416 1s provided with an eccentric or crankportion 422 (Figs. 1 and 6) which engages a'slotted portion of a block423 that rests on the plate 162. A leaf spring 424 engaging the rearortion of said block holds that end of the-b ook down on the plate 162.v On the forward end of the block 423 is a lug 425 that lies in a recess426 (Fig. 7) in the front edge of the plate 162.

When English money is being added, the block 423 is in its down position(see Fig. 3), wherein the lug 425 fills the recess 426, the front edgeof said lug being then iush with the front edge of the plate 162 (seeFig. 7). The block 423 is in the vertical lane of the transfer dog1607*. When the lock 423 is down (as in Fig. 3) the tooth 161 ofthe dog160* enga es the front edge of the lug 425, and there ore said dog is inposition to be engaged b each of the lugs 164a and 164, as a result owhich the units-pounds t pev bar A is given a carrying movement whenevertwo tens have been accumulated on the pinion 125 for the tens-shillingstype bar A2.'

When decimals are to be added, the o eration of the before-mentionedsetting ever causes the block 423 to be raised high enough so that thelug 425 is above the path of movement of the tooth 161, and consequentlythe spring 163 holds the dog 160 with its toot-h 161 in contact with therear end wall of the recess 426, in which position the front end of thedog 160a is out of the orbit of the lugs 164'J but within reachv of Vthelugs 1648. Accordingly the type bar AI will be given a carrying movementwhenever ten has been accumulated on the pinion 125* for the type barA2. It will be seen that the lug 425 and the rear end wall of the recess426 constitute two alined stops for the transfer dog 160a.

After each carrying operation, the slide 159 and the dog 160 arerestored to their normal (forward) position by any preferred means, as,for example, that disclosed in said Sandstrand Patent N o. 1,198,487

It is believed that the operation of the machine will be clear from theforegoing description, particularly when reference is made to the sampleof work shown in Fig. 2. The. fact that clear signals, subtotals andfinal totals are printed in a distinctive color has been indicated inFig. 2 by representing such signals and totals in dotted lines. Thefirst two items are decimal items, the next numerical imprint is thesubtotal of said items, following which is another decimal item and thefinal total. In registering and printing these decimal items and totals,the lever 417 was in the position shown in Fig. l. The next items on thespecimen of work shown in Fig. 2 are items of eleven pence and tenpence, followed by the subtotal amounting to one shilling, nine pence,after which is an item of seventeen shillin and the subtotal amountingto eighteen shillings, nine pence. The next item is ten pounds, twoshillings, ten pence, followed by the subtotal of eleven pounds, oneShilling, seven pence. The next item is one of nine pounds, followed bythe final total of twent pounds, one Shilling, seven pence. In printingthe above-mentioned items and totals of English currency, the lever 417was in the position shown in Fig. 3.

It will be apparent to those skilled in the art that the rigidconnection herein shown between the type carriers and their respectiveracks or actuators is not of the essence of the invention, that otherwell known arrangements of the type carriers and racks or actuators maybe employed, and that various changes may be made in the transfermechanism herein illustrated without de arting from the scope of theinvention set orth in the appended claims.

I claim as my invention:

1. In an adding machine, a transfer member, a spring tending to movesaid member out of operative position, means to hold said member inoperative position against the action of said spring, said meansincludingl a withdrawable stop for said member, and manipulative meansfor withdrawing said stop.

drawable stop for said member, and means for withdrawing said stop.

4. In an adding machine, an accumulating wheel having a plurality oftransfer lugs of differing characteristics, and a` transfer memberselectively operable by said lugs.

5. In an adding machine, an accumulating wheel having a plurality oflugs of different lengths, and a transfer member shiftable into positionfor operation by a lug ofa certainlength.

6. In an adding machine, an accumulating wheel having a plurality oflugs of differing characteristics, and a transfer member shiftable intoposition for operation by a lug having a selected characteristic.

7. In an adding machine, an accumulating pinion having a plurality oftransfer lugs, there being twice as many pinion teeth as transfer lugs,one of the transfer lugs being longer than certain of the other transferlugs.

In testimony whereof, I have hereunto aixed my signature.

OSCAR J. SUNDSTRAND.

